问题
选择题
Before I talked with ______ scientist, I had never met ______ knowledgeable person like him.
A．a; a
B．the; the
C．the; a
D．a; the
答案
C
题目分析：句意：在我与这位科学家交谈前，我从未见过像他这样知识丰富的人。前面的scientist是特指的，该用定冠词；后面的person是泛指的，该用不定冠词。所以选C。